Ventilation unit

ABSTRACT

A ventilation unit includes a fixing member coupled to an exhaust tube, through which exhaust gas is discharged, a discharge cap portion including a hollow discharge flange portion coupled to the fixing member, and a discharge cone portion extending from the discharge flange portion and having a narrow upper side and a wide lower side, a finish cap portion including a hollow finish flange portion arranged to be spaced from the discharge flange portion, a finish cone portion extending from the finish flange portion and having a narrow upper side and a wide lower side, and a finish plate portion closing the upper end of the finish cone portion, and a spacing member for fixing the discharge cap portion and the finish cap portion to be spaced from each other, wherein the discharge cone portion overlaps with the finish cone portion.

TECHNICAL FIELD

The present invention relates to a ventilation unit, specifically to a ventilation unit coupled to an exhaust tube such as a chimney or a funnel, which suppresses noise caused while discharging exhaust gas to outside by natural air flow through the side of the ventilator based on Bernoulli's Theorem, and prevents backdraft caused by strong wind from the outside.

BACKGROUND ART

A non-motored powered ventilation unit is mounted on an upper end of a chimney for efficient ventilation of exhaust gas rising up through the chimney regardless of external environmental changes such as in air pressure or air velocity caused by external wind. In particular, the ventilation unit has wings which slope down from the center to the edge and a conical cowl which is formed on an upper part of the wings, thereby preventing rainwater or humidity from entering the chimney. According to Bernoulli's Theorem, as the exhaust gas is drawn by airflow through sides, the exhaust gas swiftly passes through an upper part of the chimney, therefore the exhaust gas in the chimney to be swiftly discharged to the atmosphere. As a related prior art, Korean Registered Patent No. 10-0321573, registered in Jan. 9, 2002, entitled “FIXED TYPE VENTILATOR” is disclosed.

DISCLOSURE Technical Problem

The present invention is directed to provide a ventilation unit which suppresses noise caused while discharging exhaust gas to outside by natural air flow through the side of the ventilator based on Bernoulli's Theorem, and prevents backdraft caused by strong wind from the outside.

TECHNICAL SOLUTION

One aspect of the present invention provides a ventilation unit including: a fixing member coupled to an exhaust tube through which exhaust gas is discharged; a discharge cap portion including a discharge flange portion having a hollow and coupled to the fixing member and a discharge cone portion extending from the discharge flange portion and having a narrow upper side and a wide lower side; a finish cap portion including a finish flange portion having a hollow and disposed to be spaced from the discharge flange portion, a finish cone portion extending from the finish flange portion and having a narrow upper side and a wide lower side, and a finish plate portion configured to close an upper end of the finish cone portion; and a spacing member for fixing the discharge cap portion and the finish cap portion to be spaced apart from each other, and the discharge cone portion overlaps the finish cone portion.

Here, when “a” denotes a diameter of a wide lower portion of the discharge cone portion or the finish cone portion, “b” denotes a diameter of a narrow upper portion of the discharge cone portion or the finish cone portion, “c” denotes a height of the discharge cone portion or the finish cone portion, “d” denotes an overlapping height of the discharge cone portion and the finish cone portion, “e” denotes a distance between the discharge cap portion and the finish cap portion, and “y” denotes a difference between a diameter of the wide lower portion and the narrow upper portion, the ventilation unit according to the present invention satisfies the equation “a(n)=y(n)+b(n),(n=1,2,3, . . . ),” wherein b(n)=10n+50,(n=1,2,3, . . . ) and y(n)=60+5((n−1)/2),(n=1,3,5, . . . ) or y(n)=50+5((n−2)/2),(n=2,4,6, . . . ), and the equation “d(n)=c(n)−e(n),(n=1,2,3, . . . ),” wherein c(n)=5n+15,(n=1,2,3, . . . ) and e(n)=8+7((n−1)/2),(n=1,3,5 . . . ) or e(n)=13+7((n−2)/2),(n=2,4,6, . . . ).

ADVANTAGEOUS EFFECTS

According to one embodiment of the present invention, a ventilation unit can suppress noise caused by airflow through sides when exhaust gas is drawn to be discharged to the outside by the airflow through the sides according to Bernoulli's Theorem, and prevent a backdraft caused by strong wind from the outside.

In particular, according to one embodiment of the present invention, each component can be standardized in size and properly selected based on an amount of emission of exhaust gas or a size of an exhaust tube.

Further, the present invention can prevent exhaust gas from staying in a ventilation unit, prevent a foreign substance from entering an exhaust tube, and suppress or prevent blockage in the exhaust tube or the ventilation unit.

Further, in the present invention, a grill member can be easily fixed and prevented from moving, noise caused by the grill member can be suppressed, and a backdraft caused by strong wind from the outside can be prevented.

Further, the present invention can facilitate a connection between a ventilation unit and an exhaust tube or a connection between components, and prevent a safety accident in handling the ventilation unit.

Further, the present invention can provide a ventilation unit which is modularized according to a size of an exhaust tube, is easy to install, reduces unit cost through weight lightening, and prevents loss and breakdown of the ventilation unit from backdraft caused by strong wind such as a typhoon.

DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a ventilation unit according to one embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a coupled state of the ventilation unit according to one embodiment of the present invention.

FIG. 3 is an exploded view of the ventilation unit according to one embodiment of the present invention.

FIG. 4 is a perspective view of a grill member of the ventilation unit according to one embodiment of the present invention.

FIG. 5 is a cross-sectional view illustrating dimensional conditions of the ventilation unit according to one embodiment of the present invention.

MODES OF THE INVENTION

Hereinafter, one embodiment of a ventilation unit according to the present invention will be described with reference to the accompanying drawings. In the process of the description, thicknesses of lines illustrated in the drawings and sizes of components may be exaggerated for clarity and convenience of explanation.

Further, terms described below are defined in consideration of functions in the present invention and may vary depending on a user's or operator's intentions or customs. Therefore, the meanings of such terms should be interpreted based on the scope throughout this specification.

FIG. 1 is a perspective view of a ventilation unit according to one embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating a coupled state of the ventilation unit according to one embodiment of the present invention, FIG. 3 is an exploded view of the ventilation unit according to one embodiment of the present invention, FIG. 4 is a perspective view of a grill member of the ventilation unit according to one embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating dimensional conditions of the ventilation unit according to one embodiment of the present invention.

Referring to FIGS. 1 to 5, the ventilation unit according to one embodiment of the present invention, which is coupled to an exhaust tube 100 such as a chimney or a funnel and suppresses or prevents noise caused by airflow through sides when exhaust gas is drawn to be discharged to the outside by the airflow through the sides according to Bernoulli's Theorem may include a fixing member 10, a discharge cap portion 30, a finish cap portion 40, and a spacing member 50, and further include a grill member 20.

The fixing member 10 is coupled to the exhaust tube 100 through which exhaust gas is discharged. The fixing member 10 may include a hollow fixing sleeve portion 11 which is inserted into and coupled to an end portion of the exhaust tube 100, and a fixing flange portion 13 which extends from and is formed at an edge of the fixing sleeve portion 11 to support the discharge cap portion 30 or the finish cap portion 40.

Here, the fixing flange portion 13 may include a wing portion 133 which extends from and is formed at the edge of the fixing sleeve portion 11, and a fixing bending portion 134 which is processed to be bent at an edge of the wing portion 133.

A first hole 131 may pass through and be formed in the wing portion 133 for being coupled to the spacing member 50. A plurality of first holes 131 may be spaced from each other, thereby defining an installation place of the spacing member 50 and preventing the finish cap portion 40 and the discharge cap portion 30 from moving. Four first holes 131 are spaced apart at equal distances in the drawing, but are not limited thereto, and may be variously modified according to a distance at which the spacing member 50 is arranged.

The fixing bending portion 134 may prevent a worker from having a safety accident. The fixing bending portion 134 surrounds an edge of a discharge flange portion of the discharge cap portion 30 described below to be bent, thereby modularizing or integrating the fixing member 10 and the discharge cap portion 30 and preventing a foreign substance from entering between the fixing member 10 and the discharge cap portion 30.

The discharge cap portion 30 is coupled to the fixing member 10 to form a discharge path of exhaust gas. The discharge cap portion 30 may include a hollow discharge flange portion 31 coupled to the fixing member 10, and a discharge cone portion 33 which extends from the discharge flange portion 31, has a narrow upper side and a wide lower side, and spreads to a predetermined angle θ.

Here, second holes 312 being coupled to the spacing member 50 corresponding to the first holes 131 may pass through and be formed in the discharge flange portion 31. The second holes 312 may also be modified variously according to the distance at which the spacing member 50 is arranged.

Further, a discharge hole portion 331 in communication with the exhaust tube 100 may pass through and be formed in the discharge cone portion 33. Here, a narrow upper side and a wide lower side indicate that a diameter of the discharge hole portion 331 becomes smaller from the discharge flange portion 31 toward an end portion of the discharge cone portion 33. In addition, a lower end portion of the discharge hole portion 331 toward the exhaust tube 100 represents a wide lower portion of the discharge cone portion 33, and an upper end portion of the discharge hole portion 331 represents a narrow upper portion of the discharge cone portion 33.

A discharge bending portion 301 of at least one of the edge of the discharge flange portion 31 and the end portion of the discharge cone portion 33 is processed to be bent, thereby preventing a worker from having a safety accident.

The finish cap portion 40 is disposed to be spaced apart from the discharge cap portion 30. The finish cap portion 40 may include a hollow finish flange portion 41 which is disposed to be spaced apart from the discharge flange portion 31, a finish cone portion 43 which extends from the finish flange portion 41 and has a narrow upper side and a wide lower side, and a finish plate portion 45 which seals an end portion of the finish cone portion 43.

Here, a narrow upper side and a wide lower side indicate that a diameter of the hollow finish cone portion 43 becomes smaller from the finish flange portion 41 toward the end portion of the finish cone portion 43. In addition, a lower end portion of the finish cone portion 43 toward the exhaust tube 100 represents a wide lower portion of the finish cone portion 43, and an upper end portion of the finish cone portion 43 or the diameter of the finish plate portion 45 represents a narrow upper portion of the finish cone portion 43.

Further, third holes 413 being coupled to the spacing member 50 corresponding to the first holes 131 or the second holes 312 may pass through and be formed in the finish flange portion 41. The third holes 413 may also be modified variously according to the distance at which the spacing member 50 is arranged.

Further, a finish bending portion 401 may be processed to be bent at an edge of the finish flange portion 41, thereby preventing a worker from having a safety accident.

Further, as the finish plate portion 45 is formed to be recessed from an edge thereof toward a center thereof, which is toward a center of the exhaust tube 100, airflow through sides may be naturally directed downward and discharged to the outside. Therefore, mutual interference may be offset, and the exhaust gas may be stably discharged. In one embodiment of the present invention, the finish plate portion 45 may be formed to be concavely recessed toward the center of the exhaust tube 100 in an arc shape.

The spacing member 50 may fix the discharge cap portion 30 and the finish cap portion 40 to be spaced apart from each other. The spacing member 50 may include a spacing sleeve portion 51 which supports the discharge cap portion 30 and the finish cap portion 40 to be spaced apart, and a coupling member 53 which fixes the spacing sleeve portion 51 to the discharge cap portion 30 and the finish cap portion 40.

Here, a through hole portion 511 may be formed in the center of the spacing sleeve portion 51 to communicate with at least one of the first hole 131 to the third hole 413.

The coupling member 53 may include a coupling bolt 531, which is inserted into and supported by at least one of the first hole 131 to the third hole 413 and the through hole portion 511 of the spacing sleeve portion 51, and a coupling nut 533 which is screw-coupled to the coupling bolt 531 to fix the spacing sleeve portion 51 to the discharge cap portion 30 and the finish cap portion 40. Since the spacing sleeve portion 51 is fixed to the discharge cap portion 30 and the finish cap portion 40, a distance between the discharge cap portion 30 and the finish cap portion 40 may be stably maintained and movement of the discharge cap portion 30 at the finish cap portion 40 may be prevented.

In the ventilation unit according to another embodiment of the present invention, the grill member 20 may be inserted between the fixing member 10 and the discharge cap portion 30 to change a discharge direction of exhaust gas. The grill member 20 may include a hollow grilling portion 21 which is inserted and supported between the fixing member 10 and the discharge cap portion 30, a mesh portion 23 which is fixedly coupled to the hollow grilling portion 21, and a grill slit portion 25 which is fixedly stacked on the mesh portion 23 to change the discharge direction exhaust gas.

A communicating portion 211 may pass through and be formed in the grilling portion 21, and the mesh portion 23 may overlap the communicating portion 211 to be fixed to the grilling portion 21.

Here, a slit hole portion 251 may pass through and be formed in the grill slit portion 25, and an inclination guided portion 252 is formed to protrude at an edge of the grill slit portion 25 in an upwardly inclined manner in the discharge direction of exhaust gas. Here, neither an arrangement structure of the slit hole portion 251 nor an arrangement structure of the inclination guided portion 252 is defined and may be disposed in a longitudinal direction or a transverse direction with respect to a plate surface of the grill slit portion 25 or in a variety of known shapes such as a radial shape or a concentric circle shape.

When the grill member 20 is added, a fixing jaw portion 132 on which the grill member 20 is mounted and supported is provided at the fixing member 10 or the discharge cap portion 30, and therefore the grill member 20 is stably supported and movement of the grill member 20 may be suppressed or prevented. In an example, the fixing jaw portion 132 is provided at a corner part where the fixing sleeve portion 11 and the fixing flange portion 13 meet at the fixing member 10, and therefore the grilling portion 21 of the grill member 20 may be mounted and supported. In another example, the fixing jaw portion 132 is provided at a corner part where the discharge flange portion 31 and the discharge cone portion 33 meet at the discharge cap portion 30, and therefore the grilling portion 21 of the grill member 20 may be mounted and supported.

In the ventilation unit according to one embodiment of the present invention, the finish cone portion 43 and the discharge cone portion 33 are disposed to overlap each other, and therefore noise caused by airflow through sides may be suppressed or prevented. In detail, as the narrow upper portion of the discharge cone portion 33 is in a state of being inserted in the finish cone portion 43, it may be appreciated that the finish cone portion 43 and the discharge cone portion 33 are disposed to overlap each other.

As a result of an experiment to obtain a correlation between the discharge cap portion 30 and the finish cap portion 40 in consideration of a wind speed of airflow through sides and degrees of noise caused by the airflow through the sides at the ventilation unit, sizes of the discharge cap portion 30 and the finish cap portion 40 are measured as below in a state in which noise is not caused or is reduced remarkably.

Size of discharge cap portion or finish cap portion (mm) Order a b c d e 1 120 60 20 12 8 2 120 70 25 12 13 3 145 80 30 15 15 4 145 90 35 15 20 5 170 100 40 18 22 6 170 110 45 18 27

Here, “a” denotes a diameter of a wide lower portion of the discharge cone portion 33 or the finish cone portion 43, “b” denotes a diameter of a narrow upper portion of the discharge cone portion 33 or the finish cone portion 43, “c” denotes a height of the discharge cone portion 33 or the finish cone portion 43, “d” denotes an overlapped height of the discharge cone portion 33 and the finish cone portion 43, and “e” denotes a distance between the discharge cap portion 30 and the finish cap portion 40.

At this point, upon review of mutual correlations between “a,” “b,” “c,” “d,” and “e,” when “y” denotes a difference between the diameter of the wide lower portion and the diameter of the narrow upper portion at the discharge cone portion 33 or the finish cone portion 43, the equation “a(n)=y(n)+b(n),(n=1,2,3, . . . ),” wherein b(n)=10n+50,(n=1,2,3, . . . ) and y(n)=60+5((n−1)/2),(n=1,3,5, . . . ) or y(n)=50+5((n−2)/2),(n=2,4,6, . . . ), may be derived.

Further, the equation “d(n)=c(n)−e(n),(n=1,2,3, . . . ),” wherein c(n)=5n+15,(n=1,2,3, . . . ) and e(n)=8+7((n−1)/2),(n=1,3,5, . . . ) or e(n)=13+7((n−2)/2),(n=2,4,6, . . . ), may be derived.

According to the above-described equations, as the sizes of the discharge cap portion 30 and the finish cap portion 40 are changed regularly, the discharge cap portion 30 and the finish cap portion 40 are standardized in size. As the ventilation unit is modularized using such standardized components, at the ventilation unit which is installed on the exhaust tube 100, noise caused by airflow through sides may be suppressed or prevented.

The above-described equations were obtained as a result derived from eliminating a problem and combining the measured data, and the drawing-up effect as described above may be proposed.

According to the above-described ventilation unit, when exhaust gas is drawn to be discharged to the outside by airflow through sides according to Bernoulli's Theorem, noise caused by the airflow through the sides and a backdraft can be suppressed or prevented.

In particular, each component can be standardized in size and properly selected based on an amount of emission of exhaust gas or a size of the exhaust tube 100.

Further, the exhaust gas can be prevented from staying in the ventilation unit, a foreign substance can be prevented from entering the exhaust tube 100, and blockage in the exhaust tube 100 or the ventilation unit can be suppressed or prevented.

Further, fixing of the grill member 20 can be simple, movement of the grill member 20 can be prevented, and noise caused by the grill member 20 can be suppressed or prevented.

Further, a connection between the ventilation unit and the exhaust tube 100 or connections between components can be facilitated, and a safety accident in handling the ventilation unit can be prevented.

Further, the ventilation unit which is modularized according to the size of the exhaust tube 100 can be provided, installation can be easy, unit cost can be reduced through weight lightening, and loss and breakdown of the ventilation unit caused by strong wind (backdraft) such as a typhoon can be prevented.

The present invention has been described with reference to the examples illustrated in the drawings, but these are only examples. It will be understood by those skilled in the art that various modifications and other equivalent examples may be made.

Therefore, the technological scope of the present invention is defined by the appended claims. 

1. A ventilation unit comprising: a fixing member coupled to an exhaust tube through which exhaust gas is discharged; a discharge cap portion including a discharge flange portion having a hollow and coupled to the fixing member and a discharge cone portion extending from the discharge flange portion and having a narrow upper side and a wide lower side; a finish cap portion including a finish flange portion having a hollow and disposed to be spaced from the discharge flange portion, and a finish cone portion extending from the finish flange portion and having a narrow upper side and a wide lower side, and a finish plate portion configured to close an upper end of the finish cone portion; and a spacing member configured to space the discharge cap portion apart from the finish cap portion and configured to fix the discharge cap portion and the finish cap portion, wherein the discharge cone portion overlaps the finish cone portion.
 2. The ventilation unit of claim 1, further comprising a grill member inserted between the fixing member and the discharge cap portion to change a discharge direction of the exhaust gas.
 3. The ventilation unit of claim 2, wherein, at at least one of the fixing member and the discharge cap portion, a fixing jaw portion on which the grill member is mounted and supported is provided.
 4. The ventilation unit claim 1, wherein, when “a” denotes a diameter of a wide lower portion of the discharge cone portion or the finish cone portion, “b” denotes a diameter of a narrow upper portion of the discharge cone portion or the finish cone portion, “c” denotes a height of the discharge cone portion or the finish cone portion, “d” denotes an overlapped height of the discharge cone portion and the finish cone portion, “e” denotes a distance between the discharge cap portion and the finish cap portion, and “y” denotes a difference between the diameter of the wide lower portion and the diameter of the narrow upper portion at the discharge cone portion or the finish cone portion, the equation “a(n)=y(n)+b(n),(n=1,2,3, . . . ),” where b(n)=10n+50,(n=1,2,3, . . . ) and y(n)=60+5((n−1)/2),(n=1,3,5, . . . ) or y(n)=50+5((n−2)/2),(n=2,4,6, . . . ), and the equation “d(n)=c(n)−e(n),(n=1,2,3, . . . ),” where c(n)=5n+15,(n=1,2,3, . . . ) and e(n)=8+7((n−1)/2),(n=1,3,5, . . . ) or e(n)=13+7((n−2)/2),(n=2,4,6, . . . ), are satisfied.
 5. The ventilation unit of claim 2, wherein, when “a” denotes a diameter of a wide lower portion of the discharge cone portion or the finish cone portion, “b” denotes a diameter of a narrow upper portion of the discharge cone portion or the finish cone portion, “c” denotes a height of the discharge cone portion or the finish cone portion, “d” denotes an overlapped height of the discharge cone portion and the finish cone portion, “e” denotes a distance between the discharge cap portion and the finish cap portion, and “y” denotes a difference between the diameter of the wide lower portion and the diameter of the narrow upper portion at the discharge cone portion or the finish cone portion, the equation “a(n)=y(n)+b(n),(n=1,2,3, . . . ),” where b(n)=10n+50,(n=1,2,3, . . . ) and y(n)=60+5((n−1)/2),(n=1,3,5, . . . ) or y(n)=50+5((n−2)/2),(n=2,4,6, . . . ), and the equation “d(n)=c(n)−e(n),(n=1,2,3, . . . ),” where c(n)=5n+15,(n=1,2,3, . . . ) and e(n)=8+7((n−1)/2),(n=1,3,5, . . . ) or e(n)=13+7((n−2)/2),(n=2,4,6, . . . ), are satisfied.
 6. The ventilation unit claim 3, wherein, when “a” denotes a diameter of a wide lower portion of the discharge cone portion or the finish cone portion, “b” denotes a diameter of a narrow upper portion of the discharge cone portion or the finish cone portion, “c” denotes a height of the discharge cone portion or the finish cone portion, “d” denotes an overlapped height of the discharge cone portion and the finish cone portion, “e” denotes a distance between the discharge cap portion and the finish cap portion, and “y” denotes a difference between the diameter of the wide lower portion and the diameter of the narrow upper portion at the discharge cone portion or the finish cone portion, the equation “a(n)=y(n)+b(n),(n=1,2,3, . . . ),” where b(n)=10n+50,(n=1,2,3, . . . ) and y(n)=60+5((n−1)/2),(n=1,3,5, . . . ) or y(n)=50+5((n−2)/2),(n=2,4,6, . . . ), and the equation “d(n)=c(n)−e(n),(n=1,2,3, . . . ),” where c(n)=5n+15,(n=1,2,3, . . . ) and e(n)=8+7((n−1)/2),(n=1,3,5, . . . ) or e(n)=13+7((n−2)/2),(n=2,4,6, . . . ), are satisfied. 